How bad does fuel mileage suffer?
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On The Tree
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From: Southern California
How bad does fuel mileage suffer? Just a question but how much is fuel mileage affected with a cam swap? I'm looking at putting possibly a 224 or 228 cam in my DD, it's a 99 ls1 and an m6 right now with my current setup I have long tube headers, or-y, slp ram air box, and a lid. I get about 23-24 mpg with probably 70% highway and 30% city driving. I have yet to get a tune done, my main question is will I see a decrease/increase or relatively the same fuel mileage if I were do put one of the above mentioned cams in?
Thread Starter
On The Tree
iTrader: (4)
Joined: Apr 2012
Posts: 154
Likes: 0
From: Southern California
Only reason I'm asking is cuz it's my DD right now, looking at putting something to give me more power but also not murder my good fuel mileage as I drive around about 300 miles a week right now with school and work.
With a 6 speed transmission, and a good tune, if you can keep your foot out of the pedal and cruise it, you should be within 1-2mpg of what you had cruising before the cam swap. Now of course when you're making more power, you're using more fuel!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
when I went to a 224r my city milage went from 19 to 17 but I'm probably in the throttle more now. Its probably not even worrying about. BTW I have an A4 with a 2800 converter and 3.73 gears.
